Finding the Fourth Proportional to 2,588,928,279.20, 3,883,392,418.80 and 865,642,263.20
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Solution
The fourth proportional to 2,588,928,279.20, 3,883,392,418.80 and 865,642,263.20 is: 1,298,463,394.80
Step by Step Solution
- Step 1: Write the proportion equation
2,588,928,279.20 : 3,883,392,418.80 = 865,642,263.20 : x - Step 2: Convert to fraction form
2,588,928,279.20/3,883,392,418.80 = 865,642,263.20/x - Step 3: Cross multiply
2,588,928,279.20x = 3,883,392,418.80 × 865,642,263.20 - Step 4: Simplify right side
2,588,928,279.20x = 3,361,628,602,303,754,752 - Step 5: Solve for x
x = 3,361,628,602,303,754,752/2,588,928,279.20 - Step 6: Final answer
x = 1,298,463,394.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.